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Edicleide Macedo da Silva, Elaine Welk Lopes Pereira Nunes, José Maria da Costa, Anânkia de Oliveira Ricarte, Glauber Henrique de Sousa Nunes and Fernando Antonio Souza de Aragão

ARTICLE – Genotype x environment interaction, adaptability and stability of ‘Piel de Sapo’ melon hybrids through mixed models

Abstract: The aim of this study was to evaluate the genotypic performance of
twelve Piel de Sapo melon hybrids in the Mossoró-Assú agricultural region, state
of Rio Grande do Norte, Brazil, using mixed models. Adaptability and stability
of the predicted genotypic values were studied by the Harmonic Mean of the
Relative Performance of Genotypic Values (HMRPGV) procedure. The traits
evaluated were yield (Mg ha-1) and soluble solids content (ºBrix). The genotype
x environment interaction was significant for the two variables in all the hybrid
groups evaluated, with predominance of the complex part of the interaction,
and this makes the selection process more difficult. Considering the genotypic
values predicted, the HMRPGV method allowed identification of hybrids with
greater genotypic adaptability and stability. The experimental hybrids HP-09
and HP-06 were more promising for growing in the Mossoró-Assú agricultural
region since they have high stability and adaptability, as well as high yield and
soluble solids.

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